Active solid-state devices (e.g. – transistors – solid-state diode – Voltage variable capacitance device
Reexamination Certificate
2006-07-18
2006-07-18
Baumeister, B. William (Department: 2891)
Active solid-state devices (e.g., transistors, solid-state diode
Voltage variable capacitance device
C361S277000
Reexamination Certificate
active
07078787
ABSTRACT:
A semiconductor junction varactor is designed with gate enhancement for enabling the varactor to achieve a high ratio of maximum capacitance to minimum capacitance. The varactor has a gate region (131or181) divided into multiple portions of differing zero-point threshold voltages for enabling the varactor capacitance to vary relatively gradually with a control voltage applied to the varactor.
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Baumeister B. William
Farahani Dana
Meetin Ronald J.
National Semiconductor Corporation
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